Boiler tube protector and a method for attaching such protector to a boiler tube

Abstract

A method of attaching a boiler tube protectors having a cylindrical or semi-cylindrical shape around an outer peripheral face of a boiler tube with mortar, which boiler tube protectors, are a plurality of ceramic bodies closely arranged along their parting planes, wherein the parting planes includes means for restraining slippage of each of the ceramic bodies along the parting planes.

What is claimed is: 
     
       1. A method for attaching boiler tube protectors around an outer face of a vertical boiler tube, comprising the steps of: applying mortar on an outer face of a vertical boiler tube;   arranging a plurality of boiler tube protectors in stages around the outer face of the vertical boiler tube and in contact with the mortar on said tube, wherein a stage comprises boiler tube protectors of complementary shape vis-a-vis each other and including means for restraining slippage of adjacent protectors along parting planes between such protectors; and,   providing a stopper around the lower end of the lowermost of said stages for maintaining the protectors of the lowermost stage in position on the boiler tube for limiting flow of said mortar, wherein the stopper is heat degradable and removed by heat generated during operation of the boiler tube.   
     
     
       2. The method set forth in claim 1, wherein the mortar is cured with heat generated during boiler operation. 
     
     
       3. The method set forth in claim 1, wherein the stopper comprises inflammable material or metal.